# Subject response boxes

**URL:** <https://psychtoolbox.discourse.group/t/subject-response-boxes/789>\
**Category:** Uncategorized\
**Created:** [June 5, 2000, 4:47pm UTC](https://psychtoolbox.discourse.group/t/subject-response-boxes/789 "2000-06-05T16:47:22Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\
**Post date:** [June 5, 2000, 4:47pm UTC](https://psychtoolbox.discourse.group/t/subject-response-boxes/789/1 "2000-06-05T16:47:22Z")

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> \>I'm revamping my laboratory formerly used as a slide-projector laboratory  
> \>that was suitable for running groups of up to 8 subjects at a time. I talked  
> \>to you about this plan a couple of years ago: I plan to put in an LCD  
> \>projector controlled by a Mac running under (guess what?) MATLAB. The  
> \>implementation of this lab would go fairly easily but for one thing: I want  
> \>to have some form of subject response boxes interfaced to the Mac, along  
> \>with appropriate MATLAB functions to monitor the responses.

I know of two options that don't involve building custom hardware/software.  
  
Option i) Buy the CMU button box and download Brian Stankiewicz's   
MATLAB interface  
files. See [http://color.psych.ucsb.edu/psychtoolbox/questions.html#keyboard](http://color.psych.ucsb.edu/psychtoolbox/questions.html#keyboard)  
for all the relevant pointers.  
  
Option ii) Use a standard Mac game controller. We use the Gravis   
GamePad (about $20)  
which provides a joy stick and 4 buttons. You just install a little   
init and each button  
is read in as a key press. This one works for ADB bus, but I assume  
there are similar products available for USB. Or maybe there is  
a ADB card/adapter you can plug into USB Macs.  
  
Anyone else know of good ways to do this? Or about availability of   
USB game controllers?  
  
DB